I remember the first time I had mine (resonated) on the motorway and the drone gave me a headache... not pleasant at all. But honestly it seemed to either quieten off with time, or I just got used to it. I drove up to the Scottish highlands from Leeds and it never bothered me or my +1 at all. Some people however just don't seem to gel with them, full stop. I would have happily stayed with the OEM item, but as it was corroding, the best value for money was an aftermarket.